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APPENDIX C : CONTRAST MODULATION
R5975059A BARCOVISION 708 200498
APPENDIX C : CONTRAST MODULATION
APPENDIX C : CONTRAST MODULATION
R5975059A BARCOVISION 708 200498
APPENDIX C : CONTRAST MODULATION
C-4
C-4
Highlight VERTICAL with the con-
trol disc and press ENTER. This
adjustment is done for all three
colors at the same time.
Use the control disc to equalise the
vertical light output and press EN-
TER to continue.
The best result is obtained on a
white image by looking on the top
and the bottom side until both are
equal, or by using a very sensitive
light meter.
ENTER selects the Vertical Contrast Equali-
sation option.
EXIT returns to the Random Access Ad-
justment Mode main menu.
ADJUST returns to the Operational mode.
Contrast edge correction ('hot spot')
Highlight LEFT-RIGHT with the
control disc and press ENTER to
start the horizontal 'hot spot' cor-
rection in the center of the screen.
Adjust with the control disc for the
same light output in the corners as
in the center of the image.
This left-right adjustment must be
done in combination with the top-
bottom adjustment as both adjust-
ments influence each other.
Note : these adjustments will re-
duce the total light output, so do not
over adjust.
Hint : A bar scale of 10 - 15 for both
adjustments gives a good result.
Press ENTER to return to the Con-
trast Modulation menu.
ENTER starts the Left-Right Contrast Edge
Correction.
EXIT returns to the Random Access Ad-
justment main menu.
ADJUST returns to the Operational mode.
Select with ê or é
then <ENTER>
<EXIT> to return.
Select with ê or é
then <ENTER>
<EXIT> to return.
CONTRAST
EQUALISATION
RED HORIZONTAL
GREEN HORIZONTAL
BLUE HORIZONTAL
VERTICAL
CONTRAST
EDGE CORRECTION
LEFT-RIGHT
TOP-BOTTOM
CONTRAST
EQUALISATION
RED HORIZONTAL
GREEN HORIZONTAL
BLUE HORIZONTAL
VERTICAL
CONTRAST
EDGE CORRECTION
LEFT-RIGHT
TOP-BOTTOM
Highlight VERTICAL with the con-
trol disc and press ENTER. This
adjustment is done for all three
colors at the same time.
Use the control disc to equalise the
vertical light output and press EN-
TER to continue.
The best result is obtained on a
white image by looking on the top
and the bottom side until both are
equal, or by using a very sensitive
light meter.
ENTER selects the Vertical Contrast Equali-
sation option.
EXIT returns to the Random Access Ad-
justment Mode main menu.
ADJUST returns to the Operational mode.
Contrast edge correction ('hot spot')
Highlight LEFT-RIGHT with the
control disc and press ENTER to
start the horizontal 'hot spot' cor-
rection in the center of the screen.
Adjust with the control disc for the
same light output in the corners as
in the center of the image.
This left-right adjustment must be
done in combination with the top-
bottom adjustment as both adjust-
ments influence each other.
Note : these adjustments will re-
duce the total light output, so do not
over adjust.
Hint : A bar scale of 10 - 15 for both
adjustments gives a good result.
Press ENTER to return to the Con-
trast Modulation menu.
ENTER starts the Left-Right Contrast Edge
Correction.
EXIT returns to the Random Access Ad-
justment main menu.
ADJUST returns to the Operational mode.
Select with ê or é
then <ENTER>
<EXIT> to return.
Select with ê or é
then <ENTER>
<EXIT> to return.
CONTRAST
EQUALISATION
RED HORIZONTAL
GREEN HORIZONTAL
BLUE HORIZONTAL
VERTICAL
CONTRAST
EDGE CORRECTION
LEFT-RIGHT
TOP-BOTTOM
CONTRAST
EQUALISATION
RED HORIZONTAL
GREEN HORIZONTAL
BLUE HORIZONTAL
VERTICAL
CONTRAST
EDGE CORRECTION
LEFT-RIGHT
TOP-BOTTOM